The answer is B, because sound waves vibrate through mediums (such as liquids, solids, and gas). It can’t travel through a vacuum because there would be no molecules to vibrate.
The answer to this question is that photosynthesis requires
carbon dioxide. Photosynthesis is the process where plants converts the light
from the sunlight into a chemical energy like oxygen and organic compounds.
Plants also use photosynthesis in order for the plants to make food.
Its stabilising. Since the selection pressure is against the extremes which are the normal blood and the sickle cell anaemia.
The consumption rate, or the rate at which food and resources are consumed, is a large influential factor on a group's fertility rate
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